Glossary of Health Chap 3-8
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- What is physical activity?
- Bodily movement that is produced by the contraction of skeletal muscle and that is substantially increases energy expenditure.
- What is the definition of exercise?
- A planned, structured, and repetitive bodily movement done to improve or maintain one or more components of physical fitness.
- What does performance related fitness consist of?
- Speed, power, balance, coordination, agility, and reaction time
- What is speed?
- velocity, the ability to move rapidly
- what is power?
- the product of force and velocity and the rate at which work is performed.
- what is balance?
- equilibrium, the ability to maintain a desired body position either statically or dynamically.
- what is coordination?
- is the harmonious integration of the body parts to produce smooth, fluid motion.
- what is agility?
- the ability to change direction rapidly.
- what is reaction time?
- the time required to respond to a stimulus.
- what measurement is used for determining reaction time?
- hundredths of a second
- what are the components of health-related fitness?
- cardiorespiratory endurance, muscular strength, muscular endurance, flexibility and body composition
- Racquetball, handball, squash, tennis, badminton, soccer, softball, basketball, football, water polo are examples of what?
- performance related
- what is cardiorespiratory endurance?
- the ability to take in, deliver, and extract oxygen for physical work, its the ability to persevere at a physical task at a given intensity level.
- what are some advantages of cardiorespiratory endurance?
- improves with regular participation in aerobic activities, such as speed walking, jogging, cycling, swimming, and cross country skiing.
- aerobic means what?
- with oxygen
- the term aerobic when applied to exercise refers to what?
- activities in which oxygen demand can be met continuously during performance
- what two things are burned during an aerobic performance?
- carbohydrates and fats
- what does the term steady state mean?
- a steady rate of oxygen flow as well as the ability to sustain the intensity or the energy requirement for longer then a few minutes.
- which exercise might someone be in a steady state?
- aerobic exercise
- describe the pay as you go system?
- the body will only use the amount of oxygen needed for the exercise, and if the flow of oxygen increases then the oxygen level will increase.
- what is aerobic capacity?
- the maximum oxygen consumption
- what is the most important component of physical fitness and the foundation of total fitness?
- aerobic capacity
- long term or chronic effects of exercise is what?
- physiological changes that result from cardiorespiratory training
- what is the length if time on average that steady oxygen consumption can be maintained for?
- 10 to 60 minutes
- how many beats per minute can aerobic training lower the heart rate
- 10 to 15 beats per minute
- what is the stroke volume?
- the amount of blood that the heart can eject in one beat
- aerobic training increases the stroke volume in what two ways?
- 1. increases the size of the cavity of ventricles, which results in more blood filling the heart
2. increases the contractile strength of the ventricular wall, so contraction is more forceful and a greater amount of blood is ejected from the ventricles
- what is cardiac output?
- the amount of blood ejected by the heart in 1 minute
- what is the equation for cardiac output?
- cardiac output= heart rate x stroke volume
- cardiac output increases during aerobic training but does not do what?
- increase at rest or during submaximal exercise.
- why doesn't cardiac output change during rest or submaximal exercise?
- the lowered resting heart rate compensates for the increase in stroke volume
- the average cardiac output at rest is how many liters of blood per minute.
- 4 to 6
- during maximal exertion, cardiac output reaches values of how many liters of blood per minute for an average person.
- 18 to 20
- for an athlete during maximal exertion cardiac output can reach up to how many liters per minute.
- maximum heart rate declines how many beats per minute starting at what age?
- 1 bpm starting at age 20
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